(19)

(11)

EP 3 523 753 A1

(12)

(43) Date of publication: 14.08.2019 Bulletin 2019/33 (21) Application number: 17916456.1 (22) Date of filing: 11.12.2017

(51) International Patent Classification (IPC):  G06K 9/00(2006.01) G06K 9/34(2006.01) (86) International application number: PCT/CN2017/115491 (87) International publication number: WO 2019/113749 (20.06.2019 Gazette 2019/25)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD TN (71) Applicant: Beijing Didi Infinity Technology and Development Co., Ltd. Beijing 100193 (CN)	(72) Inventors: LI, Jian Beijing 100193 (CN) YING, Zhenzhe Beijing 100193 (CN) (74) Representative: Wang, Bo  Panovision IP Schweigerweg 4 85570 Markt Schwaben 85570 Markt Schwaben (DE)